Disk harrow.



No. 882,589. PATENTED MAR. 24, 1908. G. S. SHARP.

DISK HARROW.

APPLICATION FILED DEO.23. 1907.

3 SHEETSSHEET 1.

WITNESSES. INYENTUH.

(7 LesSS/zarp- I ATTEJRNEY.

PATENTED MAR. 24, 1908.

s SHEETS-SHEET 2.

S. SHARP.

DISK HARROW. APPLICATION FILED DEG. 2&1907.

WITNESSES- No. 882,589. PATBNTED MAR. 24; 1908.

. 0.S.SHARP.

DISK HARROW.

APPLICATION FILED DEC. 23, 1.907-

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W1 TNESEEE.

AT T RNEY.

CHARLES S. SHARP, OF AUBURN, NEW YORK, ASSIGNOR TO INTERNATIONALHARVESIEH UNITED STATES PATENT orriios.

COMPANY, A CORPORATION OF'NEW JERSEY.

DISK minnow.

Specification of Letters Patent.

Patented March 24, 1908.

Application filed December 23, 1907. Serial No. 407,671.

T 0 all whom it may concern:

, Be it known that I, CHARLES S. SHARP, a citizen of the United States,residing'at Auburn, in the county of Ca uga and State of New York, haveinvente useful Improvements in Disk Harrows, of which the following is aspecification.-

My invention relates to harrows of the disk type, and in particular tothe manner of mounting the scrapers that engage with the disks in amanner to scrape therefrom any adhering material that would otherwiseoperate to impair their efficiency; its obj ect beingto provide meanswhereby the above result may be attained in a satisfactory andconvenient manner. I attain this object by the mechanism illustrated inthe accompanying drawing, in which Figure 1 represents a plan view of aharrow having pivoted gangs connected with a draft frame and having myinvention forming a part thereof. Fig. 2 represents a plan view of alikeharrow having the disk gangs angularly'adjusted; and Fig. 3represents an. en elevation, partly in section, of Fig. 1.

Like reference numerals designate the same parts throughout the severalviews.

Referring to the drawings, l designates the tongue, 2 a draft framemember having its forward portion secured to the tongue and side members3 thereof extending rearward and ivotally connected at 4 by means Iofvertical y arranged pivots, as represented by line A -B of Fi 3, togang frames 5, and 6 is a supplementa l draft frame member secured tothe tongue and having its opposite ends secured to side members 3.

7 represents. vertical members formin part: of the gang frames, and 8lon itudinal members secured to the upper endsof the vertical members,and 9 represents weight boxes secured'thereto, and brace members 10 havetheir op 'osite ends secured to the gang frame mem ers 8 and to thesupplemental draft frame member 6.

Secured to frame. members 8' are rearwardly extending brackets 11, and.12 designates rock-shafts journaled in said bearings.

, 13 'represents scrapers secured to said rock-shafts and adapted tocontact with the individual disks 14 of each ang in a manner to removeany material t at may adhere thereto, as the scrapers are caused toswing rearward at their lower ends by a rocking certain new and movementof said shafts, as shown by dotted lines in Fig. 3.

Secured to the rock-shafts are depending arms 15, and 16 designateslinks having their inner ends'pivotally connected with the gang 'frameand being-loosely received by openings in arms 15, are provided withnuts 17 at their outer ends, by means of which the effective movement ofthe scrapers rearward may be regulated.

' Mounted in bearings 18, secured to the draft frame, is a rocker-bar19, having crank arms 20'at opposite ends thereof, and a foot lever 21secured thereto at one side of its center within convenient reach of theoperators foot.

Lever arms 22 are secured to rock-shafts 12; said arms being extendedrearward and upward and curved in a manner having their upper endsoverhanging the weight boxes and near the vertical axes of the pivotalconnection between the gang and draft frames; the curved portion of thearms allowing a movement thereof sufficient to operate the scraperswithout contacting with the weight boxes. I The-upper ends of the leverarms are connected with the crank arms 20 by means of links 23, that maybe lengthened or shortened by means of turn buckles 24. Coiled springs25 are connected with crank-arms 20 and the gang frames and operate torock the bar 19 and rock-shafts 12 in a direction to cause the scrapersto swing forward at their lower ends toward the axes of the disks.

By means of the construction as described, having the lever arms 22secured to the rockshafts 12 at or near their central part, thetorsional strain upon said shafts is divided and smaller shafts may beused, and by means of the rocker-bar 19 both rock-shafts may be operatedsimultaneously to effect a cleaning movement of the scrapers.

What I claim as my invention, and desire to secure by Letters Patent,is:

1. A harrow having, in combination, a draft-frame, a plurality ofgang-frames connected with said draft-frame, disks mounted in saidgang-frames, rock-shafts mounted in bearings upon said an'g frames,scrapers secured to said rock-s iafts and adapted to engage with saiddisks, lever arms secured to said rock-shafts, a rocker-bar mounted inbearings upon said draft-frame, said rockerframes, a

bar havini crank arms at opposite ends thereof, lin connections betweensaid cranksaid gang-frames, scrapers secured to said rock-shafts andadapted to engage with said disks, lever-arms secured to saidrock-shafts, the outer ends of said arms being substan- 'tially in linewith the axes of the pivotal connections of the draft-frame andgangframes, a rocker-bar mounted in bearings upon said draft-frame, saidrocker-bar hav ing crank-arms at opposite ends thereof, link connectionsbetween said crank-arms and the outer ends of said lever-arms, and meanswhereby said rockerbar may be rocked in its bearings.

3. A harrow having, in combination, a draft-frame, gang-frames connectedwith said draft-frame by means of vertically ar ranged pivots, disksmounted in said gangframes, rock-shafts mounted in bearings upon saidgang-frames, scrapers secured to said rock-shafts and adapted t9 engagewith said disks, lever arms secured to said rockshafts, the outer endsof said arms being substantially in line with the axes of the pivotalconnections of the draft-frame and gangrocker-bar mounted in bearingsupon said draft-frame, said rocker-bar having crank-arms at oppositeends thereof, coiled springs connecting said crank-arms with seasse saidgang-frame in a manner to rock said bar in one direction, adjustablelink connections between said crank arms and the outer ends of saidlever-arms, and means whereby said rocker-bar may be rocked in itsbearings against the action of said springs.

4. A harrow having, in combination, a draft frame, gang frames connectedwith said draft-frames by means of vertically arranged pivots, disksmounted in said gangframes, rock-shafts mounted inbearings upon saidgang-frames, scrapers secured to said rock-shafts and adapted to engagewith said disks, arms secured to said rock-shafts, adjustable linkconnections between said arms and said, gang-frames whereby a rockingmovement of said shafts may be controlled in one direction, curvedlever-arms secured to said rock-shafts, the outer ends of said armsbeing substantially in line with the axes of the pivotal cpnnectiolns ofthe draftfram'es and gang-f1 ames, a rocker-bar mounted n bearings uponsaid draft-frame, said rocker-bar having crank-arms at opposite endsthereof, coiled springs connecting said crank-arms with said gang-framesin a manner tovrock said-bar in one direction, adjustable linkconnections between said crankarms and the outer ends of said curvedleverarms, and. a foot lever secured to said rockerbar intermediate saidcrank-arms whereby said bar may be rocked in its bearings agamst theaction of said springs.

CHARLES S. SHARP.

Wvitnesses.

K. T. ELLIOTT, F. T. OBRIEN.

